mxGraphViewImageReader

A display XML to image converter. This allows to create an image of a graph without having to parse and create the graph model using the XML file created for the mxGraphView object in the thin client.

To create the XML for the mxGraphView on the client

var enc = new mxCodec(mxUtils.createXMLDocument());
var node = enc.encode(editor.graph.view);
var xml = mxUtils.getXML(node);

Summary

mxGraphViewImageReader	A display XML to image converter.
Variables
canvas	Holds the canvas.
scale	Holds the global scale of the graph.
parser	Holds the SAX parser.
background	Holds the background color.
border	Holds the border size.
Functions
mxGraphViewImageReader	Constructs a new image graph view reader.
createCanvas	Returns the canvas to be used for rendering.
read	Reads the specified view XML string.
readFile	Reads the specified view XML file in blocks of 4096 bytes.
startElement	Invoked by the SAX parser when an element starts.
parseState	Parses the bounds, absolute points and label information from the style of the state into its respective fields and returns the label of the cell.
parsePoints	Parses a string that represents a list of points into an array of mxPoints.
endElement	Invoked by the SAX parser when an element ends.
destroy	Destroy all allocated resources for this reader.
convert	Creates the image for the given display XML string.
convertFile	Creates the image for the given display XML file.

Variables

canvas

var $canvas

Holds the canvas.

scale

var $scale

Holds the global scale of the graph. This is set just before createCanvas is called.

parser

var $parser

Holds the SAX parser.

background

var $background

Holds the background color.

border

var $border

Holds the border size. Default is 0.

Functions

mxGraphViewImageReader

function mxGraphViewImageReader( $background = null,
$border = 0 )

Constructs a new image graph view reader.

createCanvas

function createCanvas( $attrs )

Returns the canvas to be used for rendering.

read

function read( $string )

Reads the specified view XML string.

readFile

function readFile( $filename )

Reads the specified view XML file in blocks of 4096 bytes.

startElement

function startElement( $parser,
$name,
$attrs )

Invoked by the SAX parser when an element starts.

parseState

function parseState( $state,
$edge )

Parses the bounds, absolute points and label information from the style of the state into its respective fields and returns the label of the cell.

parsePoints

function parsePoints( $str )

Parses a string that represents a list of points into an array of mxPoints.

endElement

function endElement( $parser,
$name )

Invoked by the SAX parser when an element ends.

destroy

function destroy()

Destroy all allocated resources for this reader.

convert

static function convert( $string,
$background = null )

Creates the image for the given display XML string.

convertFile

static function convertFile( $filename,
$background = null )

Creates the image for the given display XML file.